1) 1. ______ my father was reading a book, my mother was looking at the family album. a) When b) While 2) 2. I was having a shower ______ my friend broke my mother's favourite vase. a) When b) While 3) 3. ______ the teacher came into the classroom, some students were arguing with each other. a) When b) While 4) 4. I arrived home ______ all the guests were having tea and biscuits. a) When b) While 5) 5. ______ Sue was waiting for the 12 o'clock train, she met an old friend. a) When b) While 6) 6. What were you doing ______ the teacher looked at you suddenly? a) When b) While 7) 7. ______ the train left, Thomas was rushing to the station. a) When b) While 8) 8. The electricity went off ______ we were watching a horror film. a) When b) While 9) 9. Mr.Robinson fell off the tree ______ he was looking at the little bird's nest. a) When b) While 10) 10. I was doing homework ______ my mother knocked at the door. a) When b) While

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